Abstract
Adsorption of toxic metal ions like Ni(II) and Zn(II) on fly ash and impregnated fly ash was studied in terms of different parameters like initial metal ion concentrations, pH, and temperature. Impregnated fly ash showed much higher levels of adsorption capacity for Ni(II) and Zn(II) as compared to untreated fly ash. The various rate parameters governing the adsorption process have been determined at different temperatures. Equilibrium modeling has been carried out using Langmuir isotherm equations, and the corresponding constants have been evaluated. Thermodynamic studies have also been carried out and values of standard free energy (ΔG0), enthalpy (ΔH0), and entropy (ΔS0) calculated. The adsorption was found to be exothermic for Ni(II) and endothermic in case of Zn(II) as determined by the values of enthalpy change.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
